<%--
  Created by IntelliJ IDEA.
  User: Administrator
  Date: 2018/5/24 0024
  Time: 下午 7:53
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<form action="sum.do" method="post">
    请输入一个正实数：<input type="text" id="num" name="num">
    <input type="submit" value="提交">
</form>
</body>
</html>
